Improvement in scaffolds



J. T. ALLEN.

' SC'AFFOLD.

Patented Jan. 9,1877.

INVENTOR M a/n6 da ATTORNEY "PETERS. FHOTOLITHOGRAPHER. WASHINGTON DUNITED STATES PATENT OFFICE.

JAMES T. ALLEN, OF PHILADELPHIA, PENNSYLVANIA.

' IMPROVEMENT IN SCAFFOLDS.

Specification forming part of Letters Patent No. 186,095, dated January9, 1877; application filed December 9, 1876.

To all whom it may concern:

Be it known that I, J AMES TURLEY ALLEN, of Philadelphia, in the countyof Philadelphia and State of Pennsylvania, have invented a new andvaluable Improvement in Adjustable and Folding Scafiolds; and I dohereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the annexed drawings, making a part of this specification,and to the letters and figures of reference marked thereon.

Figure l of the drawings is a representation of a side view of thisinvention in theupright position. Fig. 2 is a partial transversesection. Fig. 3 is a bottom view, showing the scaffold folded up.

This invention has relation to improvements in scafioldings forplasterers, calciminers, and others; and it consists in the constructionand novel arrangement of the folding supports or end ladders and theirextensions, as hereinafter shown and described.

In the accompanying drawings, the letter A designates the platform ofthe scaffolding. B B represent the end supports or ladders, and 0indicates the pivoted braces, whereby the end supports are connected tothe platform by their lower portions, their upper ends being hinged, asshown at a a, to fold inward, the one over the other, when the bracesare disconnected, the latter being then carried to opposite ends of theplatform, and hooked intoend staples b b. Each end support consists of amain ladder, D, and an extension, E, connected thereto by slide-clamps cand fastenin g-pins d, the latter being passed through and justingperforations e, which are arranged to register, as indicated in thedrawings.

Instead of an extension ladder or frame, E, independent extension-barsmay be connected by clamps to the side rails of the main supports D.

At their upper ends the ladders D are provided with end bars F, whichare hinged obliquely to the under side of the platform at one end, andat the other to an oblique or wedge-shaped cleat, G, whichis secured tothe under side of the platform. The object of this construction is toturn the end supports a little to one side, when they are folded uptoward each other, so that the side bars will pass each other, and packclosely to the platform A; and to facilitate this result, the cross-barsor rounds h of the end support B, which is folded inside of the other,are located near the inner edges of the side rails, while in theopposite end support, B, which folds down upon the other, they arelocated near the outer edges of said side rails.

In this manner it is designed to provide a portable scalibld, which canbe easily folded and conveniently carried.

What I claim as new, and desire to secure by Letters Patent, is

A portable scaffold, consisting of the platform A, pivoted braces (J,and obliquely-folding end supports or ladders B B, substantially asspecified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

JAMES TURLEY ALLEN.

Witnesses:

(E0. 0. SHELMERDINE, ALLEN H. GANGEWER.

